Land use/cover change and ITS eco-environment effect in Shiyang River Basin

4th International Conference on Water Resource and Environment

地球科学;生态环境科学

Hu, X.Q.^1 ; Jin, Y.Z.^1 ; Ji, L.H.^2 ; Zeng, J.J.^3 ; Cui, Y.Q.^4 ; Song, Z.F.^1 ; Sun, D.Y.^1 ; Cheng, Y.F.^1

Gansu Research Institute for Water Conservancy, Lanzhou

730000, China^1

Coalfield Geology Bureau, Lanzhou

730000, China^2

Key Laboratory of Western China's Environmental Systems, College of Earth Environmental Sciences, Lanzhou University, Lanzhou, Gansu

730000, China^3

College of Teacher's Education, Honghe University, Honghe

654400, China^4

关键词: Ecological environment problems;    Geoscience information;    Land use dynamic degrees;    Land use/cover change;    Shiyang river basins;    Spatial-temporal evolution;    Urban and Rural Residents;    Vegetation coverage;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/191/1/012016/pdf
DOI  :  10.1088/1755-1315/191/1/012016

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on the origin data of Landsat TM images in 1980, 1995, 2000, 2006, 2012, this paper recurred to geoscience information spectrogram theory and utlized RS / GIS technologies, land use dynamic degree, land use transition matrixes and CA-Markov model to analyze the land use pattern change in Shiyang River Basin in the past 33 years, which was for the sake of discussing the spatial-temporal evolution rules and driving mechanism of land use in Shiyang River Basin. The results showed that: (1) There were apparent changes in the land use of Shiyang River Basin form 1980 to 2013. (2) in the past 33 years, the dynamic degrees of forest land, urban and rural resident construction land had relative large increase degree on the whole. (3) The main transition direction of land use types were arable land to grass land, grass land to unused land and unused land to arable land and forest land. (4) The CA-Markov model forecasting results indicated that there was no obvious change in land use construction in 2020. (5) The change of land use/cover brought desertification, mountainous runoff variation, the loss of water environment, vegetation coverage, water and soil, and a series of ecological environment problems.